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查询RavenDB中的嵌套字典

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这个问题涉及查询嵌套词典 .

我有一个案例可以简化为以下设置,其中包含一个包含Collis列表的SKU列表 .

CLASS DEFINITIONS:

public class Style
{
    public string Name { get; set; }
    public Dictionary<string, Sku> Skus = new Dictionary<string, Sku>();
}
public class Sku
{
    public string Name { get; set; }
    public Dictionary<string, Colli> Collis = new Dictionary<string, Colli>();
}
public class Colli
{
    public string Name { get; set; }
}

JSON DATA IN RAVEN DB:

{
 "Skus": {
    "Sku1": {
      "Collis": {
        "Right": {
          "Name": "Right"
        },
        "Right again": {
          "Name": "Right again"
        },
        "Wrong": {
          "Name": "Wrong"
        }
      },
      "Name": "Sku1"
    },
    "Sku2": {
      "Collis": {
        "Wrong 1": {
          "Name": "Wrong 1"
        },
        "Wrong 2": {
          "Name": "Wrong 2"
        },
        "Wrong 3": {
          "Name": "Wrong 3"
        }
      },
      "Name": "Sku2"
    }
  },
  "Name": "Style1"
}

VALID QUERIES:

(询问带有特定名称skus的样式)

var existingStyleWithSku1 = session.Query<Style>().Where(s => s.Skus["Sku1"] != null).ToList();
var nonexistingStyleWithSku4 = session.Query<Style>().Where(s => s.Skus["Sku4"] != null).ToList();

INVALID NESTED QUERY

(询问包含名为“Sku1”的sku的样式,其中包含名为“Right”的colli)

var styleWithSpecificColli = session.Query<Style>().Where(s => s.Skus["Sku1"].Collis["Right"] != null).ToList();

当我尝试执行最后一个查询时,我收到消息:

{“Url”:“/ index / dynamic / Styles?query = -Skus.get_Item(%2522Sku1%2522).Collis.Right%253A%255B%255BNULL_VALUE%255D%255D%2520AND%2520Skus.get_Item(%2522Sku1% 2522).Collis.Right%253A *&start = 0&pageSize = 128&aggregation = None“,”错误“:”System.ArgumentException:字段')CollisRight'未编入索引,无法查询未编入索引的字段\ r \ n at在Raven.Database.Indexing.Index.IndexQueryOperation.d__1c的c:\ Builds \ raven \ Raven.Database \ Indexing \ Index.cs中的Raven.Database.Indexing.Index.IndexQueryOperation.AssertQueryDoesNotContainFieldsThatAreNotIndexes():第628行\ r \ n . 在System.Linq.Enumerable的System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext()\ r \ n中的C:\ Builds \ raven \ Raven.Database \ Indexing \ Index.cs中的MoveNext():第542行\ r \ n . WhereSelectEnumerableIterator2.MoveNext()\ r \ n在System.Collections.Generic.List1.InsertRange(Int32索引,IEnumerable1集合)\ r \ n at ........

有没有办法让我能够执行最后一个查询?也许定义在RavenDB中索引什么?

先感谢您 .

1 回答

  • 3

    我将上面的示例发布为测试失败,但是synhershko更正了我的代码以使其正常工作 .

    实际上可以这样做 . 查询看起来像这样:

    WRONG:

    var styleWithSpecificColli = session.Query<Style>()
    .Where(s => s.Skus["Sku1"].Collis["Right"] != null)
    .ToList();
    

    RIGHT:

    var styleWithSpecificColli = session.Query<Style>()
     .Select(s => s.Skus["Sku1"])
     .Where(c => c.Collis["Right"] != null)
     .ToList();
    

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